Re: [net-next 11/13] igb: Make Tx budget for NAPI user adjustable

David Miller
2011-09-19T20:57:16Z

From: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Date: Sat, 17 Sep 2011 01:04:35 -0700

> From: Alexander Duyck <alexander.h.duyck@intel.com>
>
> This change is meant to make the NAPI budget limits for transmit
> adjustable. By doing this it is possible to tune the value for optimal
> performance with applications such as routing.
>
> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
> Tested-by: Aaron Brown <aaron.f.brown@intel.com>
> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

As Ben and I have mentioned, this change is not acceptable.

Ethtool settings for "hardware interrupt" coalescing and mitigation
should have no effect on NAPI behavior.